I did the first couple levels of holosync (counting awakening prologue there are 13, costing over 2 grand in total, with all but the intro level being customized in order to make people more likely to buy their own copy new instead of sharing or getting a used copy). Mercola used to promote it on his site, then he started recommending the Insight and Focus CDs which go for about $50 or so, with no other levels to be bought. You're unlikely to go wrong with any of the above, it just depends on how you want to spend your money. I'd be more apt to go for the Insight CD if anything, and spend a bit of the money left over on a Cellerciser trampoline, and then a Vitamix
